Signal lamp



N 1929. A. H. HANDLAN Y 1,735,572

SIGNAL LAMP Filed Feb. 20, 1926 C I c I B a hw/i/vroze: A 11 f/HNDLAN.

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Patented Nov. 12, 1929 FATE r F c ALEXANDER H. HAnDLnN, or ST. Louis, ivrissounr SIGNAL LAMP 3 Application filed February 20, 1926. Serial No. 89,576.

This invention relates generally to signal lamps, and more particularly to a signal lamp intended for use on railroad systems, the main object of the invention being to produce 5 a signal lamp having a base and a shell body provided with a plurality of lenses rotatable relative to said base. My improved signal lamp also includes means carried by the base thereof throughthe medium of which rays'of light from the light source within the lamp may be prevented from passing through certain of the lenses in the lamp shell according to the adjustment of the shell upon the base supporting it.

With the foregoing and other objects in view," the invention comprises the novel construction, combination and arrangement of parts hereinafter more specifically described andillustrated in the accompanying drawings, wherein is shown the preferred embodiment of the invention. However, it is to be understood that the invention comprehends changes, variations and modifications which come within the scope of the claims hereunto appended.

Fig. I is a side elevation of a signal lamp made in accordance with my invention.

Fig. II is a vertical section through the lamp shell in Fig. I.

through the lamp shown in Figs. I and II.

In the drawing A designates the base of.

my improved signal lamp and B is the shell thereof. The shell B of my improved signal 5 lamp is spherical in shape and is provided with a plurality of lenses C, and said shell is also provided with a cover D at the top thereof which is hinged to the shell at the point indicated by the reference character E. My signal lamp also includes a suitable fastening device F by means of whichthe cover D may be fastened in a closed position.

Secured to and extended from the base A of the signal lamp is an arm G by means of which said signal lamp may be secured to a suitable support when in service. In the preferred construction of my improved signal lamp the base A comprises a plate circular in plan view and provided with 9 a depressed center portion A, as shown in Fig.

Fig. III is a horizontal section taken II. Arranged within the depressed portion of the baseB is a socket B adapted'to receive an electric lamp bulb which would function as the light source of the signal lamp, and B designates a switch mechanism'by means of which the operationof the light source may be controlled. The base B is provided with an aperture B through which the operating arm B of the switchmechanism extends. so that the flow of electrical energy to the light source maybe controlled from'the exterior I of the sign'allamp. a

Extended outwardly from the base A at its lowerface is an annular flange 1,"upon the top face of which the lower face of the wall of the shell B rests.v As will be noted by referring to Fig. II, the depressed portion A of the base A is surrounded by an upwardly extended annular portion 2. and said upwardly extended annular-portion extends into the lower portion of the lamp shell B, the circumferential face of said annular portion 2' contacting with the inner'face. of the p wall of the shell." Formed inxthe circumferential face of the upwardly extended portion 2 of the base is an annular recess 3. 4 designates a pin or similar 'devicewhich is eX- tended through the wall of the shell Band into the annular recess 3, the particular device shown-in the drawing'beinga' screw which is passed'through a threaded opening in the wall of the shell. I It is apparent when the'screw A is in place asshown in Fig. II, that is, with the end portion of the screwextending into the annular recess 3, that the shell B of the lampis retained in its proper position with respect to the shell of the lamp, due to the fact that the screw 4; contacts with the top wall of theannular recess 3, whereby theshell may be rotated with respect to the base Abut may not be moved upwardly with respect tothe base A. The upper wall of the annular recess 3 is notched as indicat'ed by the reference character 5, and when it is desired to remove V the shell B from the base the lamp shell'is moved to .a' position where thegscrew Ais invertical alinement with the notch5. where-..- I upon the shell may be moved upwardly with,

respect to the base, said screw passing through said notch. I

The shell of my lamp is provided with a plurality of lens openings that accommodate the lenses C, which may be of different colors or one or more of which may be uncolo'red while the remainderare eolored,. the drawings 1. have. shown than of. such; lenses, but it is obvious that the lamp may be supplied with a greater or less number of lenses. 7 p i To prevent the passage of rays of light.- from the light source Within the lamp through any of the lenses G, I arrange withillzfih lamp.

a shield 6 which is supported by the base A and is. of. such. dilnensions. asto prevent. pass sage 0 f; rays. as light trout-the light source through; any 015 the lenses C When interposed holding the shell and the base in a desired p0 sition of adjustmentrelatively one to the other, and aprojection carried by the shell for engaging within a groove formed in the base at a true right angle with respect to the channeliornied in the base to permit separa- .tion. of; the ba e. and. the. shell.

V Iai'testimonytll'at' I claim the foregoing I hereunto aflix my signature.

ALEXANDER H. HANDLAN,

' between; the: light source and theilensl. The 7' shielidi 6*- is; pliefierably' of. sheet. metahv and; it" is:

sage of such rays of light through'other' lenses:

secured at its lower'edge tQitIlEibfilSG'A by anysuitablefasteningtmeans suzehi as screws; The

upon: the base/A while said base. remains. staa-l The rotatable lamp she-l1 B isheld: in", ad-

justed positions. by a spring-governed l ateh f bolt Zloosely arranged a spring housing" fixed to) thealiamp shell opposite to the upiwar d lyextended portion 2*- ozfi the base In: said portion 2* oifthe' base are horizontal bolt holes:

'9 adapted to: receive the latch bolt for the a 40? purpose of holding the shell in predetermined positions and. preventing rotation: oi? said shell with relation to'the base.

7 I claim: k I

In a signal lamp, a base member, a lamp she'll member adapted to be rotatably supporh I ed by the base: member, one of said members being provided with a peripheral groove having a channel. communicating therewith, said right, angle with respect to the maior'axis peripheral groove being arranged at a true of said base, and a projection carried bythe- 7 other of said members. andadapted normallyto! extend into the groove to hold the base and the shell in. inte-rfitting relation, and movable into alinement with the channel communicating with the groove to permit separation of the base and they shell.

2'. In a signal lamp, a supporting base hav- 7 ing an upright circumferential flang formed 1 ca thereon, a lamp shell having anann'ular base member adapted to overlie andi interem.

gage the upright flange on the supporting base, a member for use in producing rotationxbetween the shell and the base, the meml ber being adapted also to serve as a lock in 

